Henry P. Hall worked for General Radio Corp. and was the impedance guru behind many of their classic bridges. Until recently he could be found in the groups.io GenRad forum, answering questions on anything GR related. I emailed with him many times over the years and he remained sharp as ever until the end. Super nice guy and will be sorely missed. If you measure individual components, Henry was certainly involved somewhere along the line that led to the equipment you use.
https://www.wickedlocal.com/obituaries/pneo0533462
https://www.wickedlocal.com/obituaries/pneo0533462
R.I.P. The great life is well finished, 95 is a sign that he used his brain intensively.
